|
Cause
|
Correction
|
|
Drain and fill the unit with new oil with ultraviolet dye
J 28431-6
Fluorescent Oil Dye - 6 1-oz before using the
J 28428-E
High-Intensity Black Light Kit , when inspecting for leaks.
|
|
Drain plug or fill plug leak
|
|
1.
|
Inspect for dirty, worn, scored sealing surfaces, or missing drain and/or fill plug sealing washers.
|
|
|
Restricted or damaged ventilation hose assembly
|
Replace the ventilation hose assembly, as required.
|
Leaking at the transfer case left side weep hole
|
•
|
A transmission oil leak at the transfer case weep hole area is caused by the transmission right side drive shaft seal.
|
|
•
|
A gear oil leak at the transfer case weep hole area is caused by the transfer case input shaft front (inner) seal.
|
|
Replace components as required.
If the leak is transmission or O-ring related, do not replace the transfer case input shaft seals.
|
|
Leaking at the transfer case right side weep hole
A transmission or gear oil leak at the transfer case right side weep hole is caused by the input shaft seal located in the rear extension housing.
|
Replace the input shaft seal.
|
|
Leaking ATF at the right side axle shaft-to-intermediate shaft bearing location
|
Replace the intermediate shaft seal located in the rear extension housing.
|
|
Leaking at rear output shaft area
A leak at rear output shaft area is caused by either the rear output shaft seal or the rear output shaft housing O-ring seal.
|
Inspect and replace the rear output shaft seal as required.
The O-ring is not serviceable on AAM transfer case.
|
Leaking at transaxle assembly-to-transfer case interface
|
•
|
A transmission oil leak at the transmission-to-transfer case interface may be caused by the transmission-to-transfer case o-ring seal.
|
|
•
|
A transmission oil leak at the transfer case weep hole area is caused by the transmission right side drive shaft seal.
|
|
•
|
A gear oil leak at the transfer case weep hole area is caused by the transfer case input shaft front (inner) seal.
|
|
|
1.
|
|
Note
|
|
If the leak is transmission or O-ring related, do not replace the transfer case input shaft seals.
|
Identify the type of oil leak.
|
|
2.
|
Replace components as required.
|
|
|
Case half seam leak AAM
|
Disassemble and replace the transfer case-to-rear extension housing O-ring seal.
|
|
Leaking through case
|
|
•
|
Inspect for a cracked case.
|
|
•
|
Inspect for case porosity.
|
|
